Low Flow Sillcock


Old 11-13-19, 02:50 PM
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Low Flow Sillcock

I have a Woodford (10 yrs old) that flows less than 4 gpm. It is fed by a 40 ft straight run of 1/2" copper, with one compression repair coupling in the middle. My other sillcock is also fed with 1/2" copper, but closer to the 3/4' line feeding the house and delivers over 6 gpm. Can that long 1/2" copper run cost me that much flow? If I replaced it, I would go with 3/4" PEX and reduce at the sillcock.
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Old 11-13-19, 03:20 PM
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I've found Woodford's to have good flow so I would suspect something in the plumbing. There are calculators and tables available online to figure how much flow you loose to pipe size and fittings. Things like 90 degree fittings have a surprisingly big hit on flow.
Old 11-13-19, 04:35 PM
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1/2" has almost exactly 1/2 the flow of 3/4"

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